Wilhelm werner



1 +u e e h J S t e e h s 2 W WERNER. MACHINE FOR CUTTING BARS 0RG'IRDERS. NO. 601,606.

Patented Mar. 29.1898.

Ubifue sses ('No Model.)

W. WERNER. MACHINE FOR CUTTING BARS 0R GIRDERS.

Patented Mar. 29, 1-898.

.on both sides of the said UNITED STATES PATENT FFICE.

W'ILHELM WERNER, OF ERFURT, GERMANY, ASSIGNOR TO HUGO JOHN, OF

' SAME PLACE.

MACHINE FOR CUTTING BARS OR GIRDERS.

SPECIFICATION forming part of Letters Patent N 0. 601,606, dated March29, 1898. Application filed August 16,1897. Serial No. 648,446. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILHELM WERNER, gentleman, a subject of the King ofPrussia, Emperor of Germany, residing at Erfurt, in the Kingdom ofPrussia and German Empire, have invented new and useful Improvements inMachines for Cutting I, U, L, and Like Bars or Grinders, of which thefollowing is a specification.

My invention relates to machinery for cutting bars or girders(hereinafter called girders of various cross-sectional forms. I willdescribe it in connection with girders of I or double -T form, fromwhich its use for cutting girders of other sections will be readilyunderstood. The girder is turned over onto one of its sides and bears ona lower knife, an upper knife only being moved for the purpose ofcutting through the girder, receiving pressure in such a direction thatin combination with the lower rotatable cutting-tool it presses theflange of the double-T girder against an upright stationary third knifeand thereby causes the flange to be cut through by the stationaryvertical knife, whereupon the upper knife and the lower knife by reasonof the peculiar form of their cutting-surfaces also cut into the web ofthe girder. In this manner the work of cutting the girder is divided,first, into cutting through an upright flange by means of the threeknives arranged flange and then cutting through thehorizontally-situated girderweb. This causes a great saving of power.

Figure 1 of the accompanying drawings is a vertical 'sectionillustrating the machine. Fig. 2 is a section through the machine on theline A B, Fig. 1, looking in the direction of the arrows. Fig.3illustrates a wedge that is inserted between the pressing-punch and theupper knife. Figs. 4 and 5 are respectively an elevation and a sectionof a knife, such as the upper knife, with removable cutting edge. Figs.6 and 7 illustrate a device arranged on the girder-cutting machine formoving the girder to be cut.

The frame of the machine consists of two parallel plates 0 c, which arerigidly bolted together and are preferably supported on wheels, asshown. The plates are apertured, as at b, and in said aperture thegirder a to be cut is arranged horizontally upon its side to be actedupon by the knives d e f.

d is the stationary vertical knife, which bears with its back againstthe bolt 9 (that connects the walls of the framing) and is pressedagainst the broad surfaces of the vertical flange a of the girder a.

The lower knife 6, upon which the girder lies, is pivoted on a bolt hand has an angular cutting edge 2' 7c of such a shape that said cuttingedge enters first only in the arch a between the web and the flange, sothat therefore the cutting edge does not act with its whole surfaceagainst the lower edge of the web.

The upper knife f is the only knife whichis pressed against the girderby means of suitable power-exerting mechanism. It also has twoacute-angled cutting edges 2" is like the lower knife and is moved inthe following manner in order to make a cut:

Pivoted to thehand-lever 'm near its pivot n is a connecting-rod 0,which by means of its ratchet-teeth p and a cap g (which is pivoted onthe bolt 7" of the outer end'of a lever s) rotates the lever sgradually. Upon the rotary axle of the lever sis fixed an eccentric t,on which is sleeved an arm a, which presses through the medium of aninserted wedge 11 against the back of the upper knife f. The wedge 42 isheld in its position by means of a shoulder f on the upper knife and isarched at its back u. Against this arch the punch or bears with acorresponding recess u.

By the pressure which isexerted bythe eccentric (during the gradualoscillation of the hand-lever m and of the lover s, which is movedthereby through the medium of the rod 0) upon the knife f this knife isforced into the cavity a of the girder to be cut and acts first againstthe inner side of the flange and then against the web of the girder tobe out. n

Themode of operation of the cutting machine is as follows: For thepurpose of cutting through a girder the said girder is placed upon theknife (2, so that it is situated in the angle between the edges i and 7cand bears upon the knife e. In order to facilitate the insertion of thegirder, there is provided between the stationary vertical knife cl andthe lower knife e a spring 2, which forces the knife 6 away from theknifed and thus has a tendency to widen the space between the twoknives. When the girder has been inserted, the wedge v is insertedbetween the arm uand the upper knife f, and then by moving thehand-lever m the eccentric t is gradually rotated. In this mannerpressure is exerted upon the back of the knife fin such a directionthatthe cutting edge 70 of the same first enters the inside of theflange at a and gradually cuts through the flange onthe inside. By thismeans the girder is furits cutting edge cuts fromthe outside into thevertical flange a of the girder; also, the pressure of the arm itagainst the upper knife f acts to press the girder aagainst: the lowerknife e,.so that this latter cuts from below into the flange ofthegirderr The cutting of the knivesaifijandd into" the-girder and thesmall movement of said knives have for result that theihorizontalcutting edges '6 t" of the knives cf also gradually enter the web a ofthe girder andcut through thelatter. Whenthe flange a and the web ahavebeen cutthrough, the girder isturned,

and the-cutting operation is-effected on: the

otherside ofthe girder, assuming.thecase'of ad'ouble T girder.

The knife f is loose and is guided in a slot l in abolt Z. This boltdoes not serve to guidethe knife in the downward movement caused by thearmu,.('because the knifeis thenfreely movable in its slot Z about thebolt,) but it serves after the completion'of'the cut'to hold the knife fand to allow-of it turn-- ing up.

In' order after thecompletion of thecut to render the working openingfree for the purposel-ofinserting a fresh girder, the arm-disconnected'by means of a'chain'a to a small pivoted handle uiso that by.rotating the handlexu into the position shownin dotted lines therpunchuis drawn up. 'lhek-nife isthen capable of being turnedaround l by meansofa/handle f and canbe turned up by meansof said handle, (see dottedposition show-n in Fig. 1,) 'soasto leave thewor'king opening free.

A laterally-pivoted leaf-spring f serves'to hold the handle f of theknife fiandconse quently the latter,flrmly. In order to insure goodguidance of the arm to on the wedgev,

the arma is provided with an extended nose a In order to relieve theseparately-formed cutting edges c and i 70 in the knife-holder of load,so that a simple attachmentby means of a-screw w is sufficieut to fastenthe knife, the knife-edges themselves are provided, ,as shownin-rFig. 4,with steps i which steps 1? bear against shoulders onthe corresponding Ascrew-w is then sufficientto knife-holder. hold the knife in its place,and the pressure exerte'd'against the cutting edges-istaken up idirectly by the stepsw.

In order in such cutting-machine to facilitate as much aspossible thetransport of the girder to the knives, the following means are employed:Adjacent to the front wall of the framing a there is arranged in asleeve 1 a pin 7 2, which is capable of rotating in a horizontal senseand on which a hand-lever 3 is mounted so'as to-be capable ofoscillation.

This hand-lever 3 is provided on its front end =with a knife-edge 4 andat its rear'end with a pawl 5, which engages in the teeth 6 of the pin2. lbe turned, while the pin 2, mounted rotatather pressed against thefi'xed knife 11, so that The knife-edge 4 allows the girder to bly inthe sleeve, allows the hand-lever 3 to be moved horizontally, so that byraising and rotating the hand-lever 3 and also by releasing the same thegirder can be placed upon the lower knife,and the girder itself can bemoved to the exact-position. The other end of the girder,-whi'c'h is notto be cutthrough,

. rests upon a roller 7', which is pivoted to an arm 8, that can beraised by means of ahandlever 9;.pi-voted' on a bolt 10. The arm 8,

roller 7-,,and lever 9 are arranged'between the two walls of the framingc. ThearmSbears against a roller 11, and the free end ofthe roller 7isguided by means of a flat strip of iron 12 between the walls of theframing. Thehand-lever 9 isprovi'ded at its rear end witha pawl 13',which is adapted to engage with ratchet-teeth 14: on-the rear of thewalls of theframing o. By moving the hand-lever 9 downward the girderwean be raised by the ascendingvroller 7 and can be movedforward incombination'withthe transportingapparatus 3'4.

In' order to prevent the knives from cutting too deeply which mightcause: them to meet at'their edges,-,the'knives are formed withshoulders y y, which meet when the cutting stroke of the'knife iscompleted.

Having now particularly described and ascertained the nature of the saidinvention and inwhat manner thesame is to be performed, Ideclare thatwhat I claim is 1. In a machine for cutting girders,the combinationwviththe vertical stationary knife d, of the upper movable knife f arrangedin front of the stationary knife, the pivoted lower knife 6 arrangedbeneath the upper movable knife and adapted to be moved'away from thestationary-knife for the insertion of the girder, a spring 2 for movingthe lower knife away from the stationary knife, and meansfor actuatingthe upper movable knife,

substantially as described.

2. Ina machine for-cutting girders,the combination of the verticalstationary knife (1, the pivoted lower knifee, the upper movable knife-fhaving handle f and'pivot Z,Yan eccentric 15 carried by lever mechanism,,and the arm a sleeved on said eccentric and actuated thereby toexert apressure against the back of the upper movable knife, substantially asdescribed;

3. In a machine for cutting girde'rs,the com bination'with thestationary knife d, of the lower knife 6 arranged in front of thestationary knife, the upper movable knife f mounted on a pivot, aneccentric i, an arm to sleeved on the eccentric and actuated thereby, aremovable wedge interposed between the end of said arm and the back ofthe movable knife, a lever and chain for elevating the arm a, a handle ffixed on the knife f for raising the latter about its pivot, and meansfor holding the handle, substantially as described.

4. In amachine for cutting girders,the combination with the cuttingmechanism, of means for moving the girder comprising a lever 3 pivotallyconnected intermediate its VILHELM WERNER.

Witnesses:

MAX MEYER, FRIEDRICH BECK.

